Chapter 1.1, Problem 41E

To determine

To evaluate: $f\left(3\right)$, if $f\left(x\right)=2x+3$ .

Answer to Problem 41E

  $9$

Explanation of Solution

Given information: The given value of $f\left(x\right)$ is as follows:

  $f\left(x\right)=2x+3$ … (1)

Calculation:

To evaluate $f\left(3\right)$ , substitute the value of $x=3$ in equation (1) and simplify as shown below.

  $\begin{array}{c}f\left(x\right)=2x+3\\ f\left(3\right)=2\left(3\right)+3\\ =6+3\\ =9\end{array}$

Hence, the value of $f\left(3\right)$ is $9$ .